Competitive adsorption and diffusion of methane and vapor-phase per- and polyfluoroalkyl substances in montmorillonite nano pores: Environmental implications

Waste Management, Journal Year: 2025, Volume and Issue: 200, P. 114746 - 114746

Published: March 14, 2025

Language: Английский

---

Understanding The Response Mechanisms of C4 and C3 Crops to PFHxA Exposure from The Perspective of Plant Water Physiology and Self-Detoxification

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 493, P. 138287 - 138287

Published: April 17, 2025

Language: Английский

---

Predicting leachate impact on groundwater using electrical conductivity and oxidation–reduction potential measurements: An empirical and theoretical approach

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 474, P. 134733 - 134733

Published: May 24, 2024

This study developed innovative predictive models of groundwater pollution using in situ electrical conductivity (EC) and oxidation-reduction potential (ORP) measurements at livestock carcass burial sites. Combined electrode analysis (EC ORP) machine learning techniques efficiently accurately distinguished between leachate background groundwater. Two models-empirical theoretical-were constructed based on a supervised classification framework. The empirical model constructs classifier with high accuracy, sensitivity, specificity, utilizing the comprehensive EC ORP measurements. theoretical only two end members achieves comparable performance by simulating leachate-groundwater interactions geochemical mixing model. Besides enhancing early detection capabilities, our approach considerably reduces reliance extensive hydrochemical analyses, thus streamlining monitoring process. Moreover, use field parameters was found to proactively identify incidents, efficiency strategies. Our is applicable various waste disposal sites, indicating its for environmental management.

Language: Английский

---

The Removal of Per- and Poly-Fluoroalkyl Substances from Water: A Review on Destructive and Non-Destructive Methods

Separations, Journal Year: 2024, Volume and Issue: 11(4), P. 122 - 122

Published: April 18, 2024

PFAS, or per- and poly-fluoroalkyl substances, are a broad group of man-made organic compounds that very persistent, mobile, tend to bioaccumulate. Their removal from different environmental media is becoming increasingly important because they associated with multitude (eco)toxicological effects on both humans the environment. PFAS detected in wastewater, groundwater, drinking water, surface subcategories PFOS PFOA being most detected. These divided into polymeric non-polymeric groups. Non-polymeric great research interest due their frequent detection Numerous methods have been applied for destructive non-destructive (separation) techniques. Given strength C–F bond, destruction challenging, while separation techniques, management isolated requires further consideration. Most techniques small-scale applications show some limitations larger applications, even though promising. Adsorption an environmentally sustainable, economical, high-performance technique remove several classes emerging pollutants water. In this review, use various types adsorbents water reported, as well expected adsorption mechanisms. There technologies considered developed manage PFAS; however, still experimental stage, each showing its appeal potential applications.

Language: Английский

---

Characterization of per- and polyfluoroalkyl substances (PFAS) and other constituents in MSW landfill leachate from Puerto Rico

Chemosphere, Journal Year: 2024, Volume and Issue: 358, P. 142141 - 142141

Published: April 25, 2024

Language: Английский

---

Metagenomic characterization of anaerobic fermentation in weathered coal for biomethane production enhanced by landfill leachate

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 191, P. 275 - 286

Published: Sept. 5, 2024

Language: Английский

---

Exploring the sources, occurrence, transformation, toxicity, monitoring, and remediation strategies of per- and polyfluoroalkyl substances: a review

Environmental Monitoring and Assessment, Journal Year: 2024, Volume and Issue: 196(12)

Published: Nov. 18, 2024

Language: Английский

---

PFAS Electroanalysis in Low-Oxygen River Water Using Electrogenerated Dioxygen

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(51), P. 21815 - 21822

Published: Dec. 12, 2023

Per- and polyfluoroalkyl substances (PFAS), nicknamed "forever chemicals" due to the strength of their carbon–fluorine bonds, are a class potent micropollutants that cause deleterious health effects in mammals. The current state-of-the-art detection method requires collection transport water samples centralized facility where chromatography mass spectrometry performed for separation, identification, quantification PFAS. However, efficient remediation efforts be properly informed, more rapid in-field testing is required. We previously demonstrated development use dioxygen as mediator molecule. predicated on assumption there will consistent ambient levels natural waters. This not always case hypoxic groundwater at high altitudes. To overcome this challenge further advance strategies enable electroanalysis PFAS, we demonstrate, proof concept, can generated solution through hydrolysis water. electrogenerated then used molecule indirect PFOS via molecularly imprinted polymer (MIP)-based electroanalysis. demonstrate calibration curves constructed with precision sensitivity (LOD < 1 ppt or ng/L). Our results provide foundation enabling PFAS

Language: Английский

---

THE PRESENCE OF PFAS IN WASTES AND RELATED IMPLICATIONS ON THE CURRENT AND PROPOSED EUROPEAN REGULATORY FRAMEWORK: A SYSTEMATIC CRITICAL REVIEW

Detritus, Journal Year: 2024, Volume and Issue: 26, P. 89 - 105

Published: Feb. 28, 2024

Nowadays the use of PFAS is widespread in products modern society and their exposure can occur directly through emissions such as dietary intake, water air inhalation, skin contact. Additionally, happen indirectly environmental release degradation precursors. To fully understand potential for life cycle emissions, it necessary to consider waste stage, an integral part a substance cycle, whether exists its pure form mixture or within article. Overall, knowledge about impact on current future management remains limited. Therefore, this study conducted critical analysis presence relevant streams (plastic; metals; textile leather; paper cardboards). It also discussed how could influence management, taking into account ongoing updates legal framework, with particular attention proposed new provisions regarding restriction REACH regulation. Within limits review, only very small number outliers were found exceed considered limit 25 ppb each material category. The percentage exceedances ranged from nearly 1% (PFOS measurements cardboard waste) 8% ("Other PFAS" textiles leather waste). Regarding analytical methods identified, pragmatic solution suggested. This combines "not targeted" "targeted" methodologies stepwise procedure, building upon OECD definition

Language: Английский

---

Occurrence and efficient removal of PFAS from landfill leachates using on-site DTRO systems: A comprehensive analysis across 11 Chinese cities

Waste Management, Journal Year: 2024, Volume and Issue: 190, P. 511 - 519

Published: Oct. 24, 2024

Language: Английский

---